This error happens when you try to stack arrays but the size of arrays along the concatenation axis don’t match. E.g.

You are watching: Valueerror: all the input array dimensions except for the concatenation axis must match exactly

Will provide the error as in the title. Due to the fact that np.vstack tries to ridge the 2 arrays vertically, i.e. Make the complying with output:

But you can still ridge a and also b horizontally through np.hstack, since both arrays have only one row. Because that the over a, b, np.hstack((a, b)) offers <<1,2,3,4,5>>.

numpy.vstack and numpy.hstack are special situations of np.concatenate, which join a succession of arrays follow me an existing axis. therefore in general, when using np.concatenate((a, b), axis=n), you need to make sure the shape of the 2 arrays are precisely the same other than along axis n. I.e. A.shape<:n> + a.shape == b.shape<:n> + b.shape, otherwise friend will obtain the error as in the title.

PS: Ever struggling extract html table or other similar web data to an excel sheet or a csv paper ? examine out the isheet chrome extension here:

Share this:

Like this:

Like Loading...
Posted in UncategorizedTagged arrays, concatenate, hstack, numpy, python, vstack short article navigation
Previous article ValueError: The truth value that a series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() ora.all()
Next article ValueError: The shaft label is not unique(pandas)

Leave a answer Cancel reply

Enter your comment here...

Fill in her details below or click an symbol to log in:


Email (required) (Address never made public)
Name (required)

You are commenting utilizing your account.(LogOut/Change)


You are commenting utilizing your Google account.(LogOut/Change)


You are commenting utilizing your Twitter account.(LogOut/Change)


You space commenting making use of your on facebook account.(LogOut/Change)


Connecting to %s

inform me of brand-new comments via email.

educate me of brand-new posts via email.

See more: Walmart Online Order Filling Team Associate, Walmart Order Filler Hourly Pay


Data analysis Tools

Blog at
Sign me up
%d bloggers like this: